How can I create a calendar with toggled events

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Javascript

Ajax

calendar

Hi, I'm looking to create a calendar from an RSS / XML feed that allows the user to toggle which type of events are shown, preferably in javascript.

The idea would be to have a month-view calendar that loads a series of events with different categories (e.g. football, hockey, tennis etc.) and have corresponding tick-boxes that show or hide them i.e. uncheck tennis and the events are removed / hidden; recheck and they appear.

So the RSS / XML would have date start, date stop, title, description, category (e.g. tennis), image and link.

Any days clicked on in the calendar would show a list of events in a small div to the side as per my terrible linked example :)

http://www.photodev.co.uk/events.png

Are there any examples of this anyone knows of?

Any help greatly appreciated!
Thanks,
Rob